Cumbria John

I guessed so, but just hoped there was another way. Thanks

I want to know the year of manufacture of my CG125 K1. It was first registered 1980 but I believe it was manufacture in 1979. There are many sites cross referencing VIN with date of manufacture but they only refer to Honda coding which started in 1980. My VIN starts with CG125 followed by numbers which was the norm before that time. Any ideas ?

Thanks both -will try to get a spark tester, and will re- re -check the timing.

Hi. Thanks for the reply. Yes I bought new barrel and piston, and then rechecked the compression. I got around 160psi. The sooted plug has a dry "fluffy" appearance so I believe it points to fuel. I am going to look into rejetting if I can find some. Trouble is these bikes are so cheap that its difficult to get small parts. If that doesnt work I may try kicking it over ( a lot ) with no plug lead or fuel and then taking the head off to see if any oil has pumped up, but I think that given the symptoms I believe that would be unlikely. I got this bike as a project because of its simplicity and its turned out to be 100 times more hassle than my last project which was a cb550 k1 which I picked out of a hedge in Anglesea

Hi. Here I am again - Been laid up for a while - Still trying to sort out the rich running. Here is the list of all I have checked/replaced -- The bike starts on first kick with choke out, after a few seconds I can shut the choke off - ride a hundred yards and it cuts out with a sooted up plug. Replaced the original carb after doing all the fiddling with float, needle height etc. Yes it is the correct PB replacement. Got exactly the same symptoms.( running with no sponge on the air cleaner so no restrictions there ) - Had the generator rewound and now get a excellent spark (new coil, points and condenser) Checked ignition timing (several times ) and its spot on. New cylinder head, barrel and piston. Checked valve clearances several times. So basically it is a new top end completely. Any ideas ???

Thanks for all the suggestions. Its deffo the correct PD carb. The spark is a good one for a 6v. BUT I did a compression test as suggested and only got 120psi - put a drop of oil down the plug hole and got 160psi !!! The problem is that the bike was a non runner when I got it and have only just got it running ( see my previous problems ) I must admit that the bores looked OK, but obviously they are not. Luckily its a doddle to strip down and do what is required. Thanks again Chaps.

CG125 K1 - I bought a new carb for the bike because I could not weaken the mixture and thought that the old one was worn out, but on fitting it I find that the mixture is still way too rich ( plug is very sooty after warm up. I have set the pilot to the recommended 1 3/4 turns, but can screw it in and out with no effect ( on colour tune } The float height is spot on at .73 and the needle is in the 3rd groove. The air filter is absolutely clean. What else is there to look at ??? I was considering lowering the needle to the second groove but I will wait until I see if anyone has a suggestion.

Just to tidy up the loose ends of this post - The bike was fitted with a clutch cable from God knows what, near enough but not right. When I finally got the correct one, all was OK, so panic over. Just goes to show that when you get an abandoned bike, there is a good possibility it was left because someone has messed about until there was that much amiss it they just left it. As my son said - by the time you finish, the only thing originally on the bike will be the dust caps !!!!

Hi Fastbob. Why - does it matter. I tried both ways. However, things have moved on now - I got my new cable from wimoto and I can see the difference in free play available between inner and outer, BUT they sent the wrong cable - @%$K .There are two versions - The standard has sheath length of 100cm for the high bars as fitted to the 1979 model the alternative is 85cm for low bars. They should really have the longer as default but dont. So I am waiting for a replacement. Good this isnt it ! I am changing my name to Jobe ( or should it be Jonah )

Hi Fastbob and timR. Had to use a clamp on the actuating lever to pull the clutch in far enough to slip to cable on. The levers are original Honda. I have dismantled the clutch assy and micro-metered the plates and springs and all seem in new condition. I am waiting for a new clutch cable from Wemoto and hope that fixes it. Nothing surprises me with this bike its fighting me at every step. It was a rusty heap found in a shed and not used for at least 10 years. Up to now it looks like someone has not been too careful in ordering parts for this specific model ( cg125 k1 1979 6v ) I,ve even had David Silver sending me the wrong parts. Having said that I am enjoying sorting it out. I will return to the fray this weekend when I have actioned the the job list from She Who Must Be Obeyed.

Its the cable that came with the bike and physically seemed OK. I have not had the bike in a position to get it moving yet, and only just got it running after nightmare electrics problems. I suppose you may be correct, judging by all the other botch ups I have found. I think I will do a full check, and measure the plates. I need to take that side off anyway because I found that the neutral switch pickup pate on the selector either isn't there, or is in the wrong position.

During the renovation of my CG125 K1 I noticed that the clutch cable had been installed incorrectly. Which I think was an attempt to give free play at the lever end ( which it did'nt) . I have now fitted it correctly but the situation is still the same. Am I right in thinking that if I cannot achieve any free play, then there is a good possibility that the clutch plates are worn down.

While going through all the above, I realised that there is no kill switch other than the ignition key, which isn't very accessible, so I got a generic one and fitted it in the circuit ( belt and braces )

hi. Let me just get it running properly first, before I step out into another unknown. Its the first time I have had it running so there are other issues to look at ( mechanical thankfully) .

Yeeees - got a spark !!! As I said before - Sherlock Holmes said " when you have eliminated the probable, look for the improbable" (or something like that ) In desperation I got a new set of genuine Honda points, even though all seemed OK with the other "new" ones. Set everything up (again) and the electickery did its stuff. Phew - at least I know that has an ignition system even better than new - all connectors soldered, earths everywhere, and brand new components. Thanks to all for your suggestions I have learned a lot about electrics on a bike. Its been emotional.